Japan Airlines Co. and ANA Holdings Inc.'s fight over additional slots at Tokyo's Haneda airport is widening to include global airline partnerships seeking access to fly businesspeople right into the heart of the capital.

Haneda, Asia's second-busiest airport, is set to gain about 40 new daytime landing slots starting in March, transport minister Akihiro Ota said Sept. 20.

United Continental Holdings Inc., which has teamed up with ANA, is seeking its first slot on its own, while Delta Air Lines Inc., the only major U.S. carrier without a Japanese partner, wants 25 slot pairs. American Airlines Inc. has a partnership with JAL.